From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Drawing for fitting three exit pipes between pairs of cylinders.
| Identifier | WestWitteringFiles\I\May1922\ Scan93 | |
| Date | 10th December 1930 | |
| (4) Mr. Elliott is arranging to send you a drawing XX by which you can drill and fit 3 exit pipes between the pairs of cylinders instead of the one only at the end. R.{Sir Henry Royce} | ||